Basic ashless additives and lubricating compositions containing same
US12371631B2 · kind B2 · utility
0Cited by
23References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2022 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Jan 6, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The disclosed technology relates to a lubricating composition comprising an oil of lubricating viscosity and an ashless basic amine additive selected from a secondary amine containing α-carbon aromatic substitution. The basic secondary amine additives used in the lubricating oils of the disclosed technology impart basicity measured as total base number (TBN) without adding sulfated ash. Lubricating oils containing the basic secondary amine additives of the disclosed technology simultaneously achieve seals compatibility, deposit, and corrosion control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.